Answer: (6) $172.50 (7) $74.80 (8) $106.65 (9) $141.20
(10) $119.00 (11) 12.5% markup (12) 15% markdown
Step-by-step explanation:
Use the following formula (+ for markup and - for markdown/discount)
Base Price ± (Base Price × markup/markdown) = Adjusted Price
6. Markup so add (+)
150 + (150 × 0.15) = x
150 + 22.5 = x
172.50 = x
7. Markdown so subtract (-)
85 - (85 × 0.12) = x
85 - 10.2 = x
74.80 = x
8. Discount so subtract (-)
135 - (135 × 0.21) = x
135 - 28.35 = x
106.65 = x
9. Markup so add (+)
x + (x × 0.25) = 176.50
x + 0.25x = 176.50
1.25x = 176.50
x = 141.20
10. Markdown so subtract (-)
x - (x × 0.15) = 101.15
x - 0.15x = 101.15
0.85x = 101.15
x = 119.00
11. The adjusted price is more than the base price so add (+)
278 + (278 × x) = 312.75
278 + 278x = 312.75
278x = 34.75
x = 0.125
x = 12.5% markup
12. The adjusted price is less than the base price so subtract (-)
157 - (157 × x) = 133.45
157 - 157x = 133.45
-157x = -23.55
x = 0.15
x = 15% markdown
